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export cluster health as prometheus metrics (#17741)

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This commit is contained in:
Harshavardhana
2023-07-28 01:16:53 -07:00
committed by GitHub
parent c2edbfae55
commit 114fab4c70
6 changed files with 117 additions and 48 deletions
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41
cmd/healthcheck-handler.go
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@@ -28,22 +28,17 @@ import (
const unavailable = "offline"
func isServerNotInitialized() bool {
return newObjectLayerFn() == nil
}
// ClusterCheckHandler returns if the server is ready for requests.
func ClusterCheckHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ClusterCheckHandler")
if isServerNotInitialized() {
objLayer := newObjectLayerFn()
if objLayer == nil {
w.Header().Set(xhttp.MinIOServerStatus, unavailable)
writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
return
}
objLayer := newObjectLayerFn()
ctx, cancel := context.WithTimeout(ctx, globalAPIConfig.getClusterDeadline())
defer cancel()
@@ -52,16 +47,13 @@ func ClusterCheckHandler(w http.ResponseWriter, r *http.Request) {
DeploymentType: r.Form.Get("deployment-type"),
}
result := objLayer.Health(ctx, opts)
if result.WriteQuorum > 0 {
w.Header().Set(xhttp.MinIOWriteQuorum, strconv.Itoa(result.WriteQuorum))
}
w.Header().Set(xhttp.MinIOWriteQuorum, strconv.Itoa(result.WriteQuorum))
w.Header().Set(xhttp.MinIOStorageClassDefaults, strconv.FormatBool(result.UsingDefaults))
// return how many drives are being healed if any
if result.HealingDrives > 0 {
w.Header().Set(xhttp.MinIOHealingDrives, strconv.Itoa(result.HealingDrives))
}
if !result.Healthy {
// return how many drives are being healed if any
if result.HealingDrives > 0 {
w.Header().Set(xhttp.MinIOHealingDrives, strconv.Itoa(result.HealingDrives))
}
// As a maintenance call we are purposefully asked to be taken
// down, this is for orchestrators to know if we can safely
// take this server down, return appropriate error.
@@ -79,14 +71,13 @@ func ClusterCheckHandler(w http.ResponseWriter, r *http.Request) {
func ClusterReadCheckHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ClusterReadCheckHandler")
if isServerNotInitialized() {
objLayer := newObjectLayerFn()
if objLayer == nil {
w.Header().Set(xhttp.MinIOServerStatus, unavailable)
writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
return
}
objLayer := newObjectLayerFn()
ctx, cancel := context.WithTimeout(ctx, globalAPIConfig.getClusterDeadline())
defer cancel()
@@ -106,17 +97,17 @@ func ReadinessCheckHandler(w http.ResponseWriter, r *http.Request) {
// LivenessCheckHandler - Checks if the process is up. Always returns success.
func LivenessCheckHandler(w http.ResponseWriter, r *http.Request) {
peerCall := r.Header.Get("x-minio-from-peer") != ""
if peerCall {
return
}
if isServerNotInitialized() {
objLayer := newObjectLayerFn()
if objLayer == nil {
// Service not initialized yet
w.Header().Set(xhttp.MinIOServerStatus, unavailable)
}
peerCall := r.Header.Get(xhttp.MinIOPeerCall) != ""
if peerCall {
return
}
if int(globalHTTPStats.loadRequestsInQueue()) > globalAPIConfig.getRequestsPoolCapacity() {
apiErr := getAPIError(ErrBusy)
switch r.Method {